/// <summary>
/// Decrypts the <paramref name="encrypted"/> data with the <paramref name="cipher"/>.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="cipher">The cipher.</param>
/// <param name="encrypted">The encrypted.</param>
/// <returns>T.</returns>
public static Nullable <T> DecryptNullable <T>(
this ICipher cipher,
byte[] encrypted) where T : struct
{
if (cipher == null)
{
throw new ArgumentNullException(nameof(cipher));
}
if (encrypted == null)
{
throw new ArgumentNullException(nameof(encrypted));
}
if (encrypted.Length < 2)
{
throw new ArgumentException(Resources.InvalidArgumentLength, nameof(encrypted));
}
if (!EncryptTypedData.ContainsKey(typeof(T)))
{
throw new ArgumentException("The specified data type cannot be decrypted.");
}
var decrypted = cipher.Decrypt(encrypted);
if (decrypted.Length < 2)
{
throw new ArgumentException("The argument is not a valid encrypted Nullable<T> value.");
}
return(FromByteArray.ToNullable <T>(decrypted));
}
public static ushort[] DecryptUInt16Array(
this ICipher cipher,
byte[] encrypted)
{
if (cipher == null)
{
throw new ArgumentNullException(nameof(cipher));
}
if (encrypted == null)
{
return(null);
}
return(FromByteArray.ToUInt16Array(cipher.Decrypt(encrypted)));
}
/// <summary>
/// Decrypts the <paramref name="encryptedText"/> to a string, provided the original string was encoded with <see cref="T:System.Text.Encoding.UTF8"/>.
/// </summary>
/// <param name="cipher">The cipher.</param>
/// <param name="encryptedText">The crypto text.</param>
/// <returns>The decrypted text.</returns>
/// <exception cref="System.ArgumentNullException">Thrown when <paramref name="cipher"/> is <see langword="null"/>.</exception>
public static string DecryptString(
this ICipher cipher,
byte[] encryptedText)
{
if (cipher == null)
{
throw new ArgumentNullException(nameof(cipher));
}
if (encryptedText == null)
{
return(null);
}
return(FromByteArray.ToString(cipher.Decrypt(encryptedText)));
}
/// <summary>
/// Decrypts the <paramref name="encrypted"/> to an array of <see cref="bool"/> values.
/// </summary>
/// <param name="cipher">The cipher.</param>
/// <param name="encrypted">The data to be decrypted.</param>
/// <returns>The encrypted text.</returns>
/// <exception cref="System.ArgumentNullException">Thrown when <paramref name="cipher"/> is <see langword="null"/>.</exception>
public static bool[] DecryptBooleanArray(
this ICipher cipher,
byte[] encrypted)
{
if (cipher == null)
{
throw new ArgumentNullException(nameof(cipher));
}
if (encrypted == null)
{
return(null);
}
var decrypted = cipher.Decrypt(encrypted);
return(FromByteArray.ToBooleanArray(decrypted));
}
public static ushort DecryptUInt16(
this ICipher cipher,
byte[] encrypted)
{
if (cipher == null)
{
throw new ArgumentNullException(nameof(cipher));
}
if (encrypted == null)
{
throw new ArgumentNullException(nameof(encrypted));
}
var decrypted = cipher.Decrypt(encrypted);
if (decrypted.Length < 2)
{
throw new ArgumentException(Resources.InvalidEncryptedValue);
}
return(FromByteArray.ToChar(decrypted));
}
/// <summary>
/// Decrypts the <paramref name="encrypted"/> text to a <see cref="decimal"/> value.
/// </summary>
/// <param name="cipher">The cipher.</param>
/// <param name="encrypted">The encrypted text.</param>
/// <returns>The decrypted value.</returns>
/// <exception cref="ArgumentNullException">Thrown when <paramref name="cipher"/> or <paramref name="encrypted"/> are <see langword="null"/>.</exception>
public static Guid DecryptGuid(
this ICipher cipher,
byte[] encrypted)
{
if (cipher == null)
{
throw new ArgumentNullException(nameof(cipher));
}
if (encrypted == null)
{
throw new ArgumentNullException(nameof(encrypted));
}
var decrypted = cipher.Decrypt(encrypted);
if (decrypted.Length != 16)
{
throw new ArgumentException(Resources.InvalidEncryptedValue);
}
return(FromByteArray.ToGuid(decrypted));
}
